1. The state or relation of being a sister; the office or duty of a sister. She . . . Abhorr'd Her proper blood, and left to do the part Of sisterhood, to do that of a wife. (Daniel)
2. A society of sisters; a society of women united in one faith or order; sisters, collectively. A sisterhood of holy nuns. The fair young flowers . . . A beauteous sisterhood. (bryant)
Origin: Sister _ hood.